Finding the Fourth Proportional to 9,670.50, 13,345.56 and 5,479.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,670.50 : 13,345.56 = 5,479.02 : x
2. Step 2: Convert to fraction form
   9,670.50/13,345.56 = 5,479.02/x
3. Step 3: Cross multiply
   9,670.50x = 13,345.56 × 5,479.02
4. Step 4: Simplify right side
   9,670.50x = 73,120,590.15
5. Step 5: Solve for x
   x = 73,120,590.15/9,670.50
6. Step 6: Final answer
   x = 7,561.20